Combine orange juice concentrate through vanilla into blender. Fill blender to ¾ full with ice. Blend until smooth. Consistency of orange juice concentrate can vary, so you can add more water if the beverage is too thick.
If you are adding vodka to the whole batch, add 4 ounces (1 regular sized shot glass = 1 ounce, so 4 shot glasses) with the rest of ingredients when blending. If adding to individual drinks, add the shot straight to serving glass and stir before serving. If you choose to use champagne do NOT add during the blending process, it will decrease the carbonation. Add it to each glass individually and stir gently or just use it as a floater.